I think that the only option for Bioware now, is to step up and admit that they messed up and that they will make it right. Then they have to offer an ending DLC for free. If you follow what many many fans have said, if they fix this and give it away for free then they would gladly spend more money on other DLC. But on the flip side many also will not spend another dime on it if they do not offer an ending DLC for free.
Frankly I don't really like the entire idea of DLC that much. I have found the more often than not it is just a simple money grabber. Even the initial DLC for ME3 that was included in the collectors edition, that should have never been DLC. And in my opinion the difference between a collectors edition and regular edition should never be the actual game, but more in the swag that comes with it. Now DLC can add more to an older game and that is when DLC's should be brought out, you know once the game is getting older, but a new one in the franchise is still a little ways off.
Anyways, getting on a DLC tangent there. I would and will get more DLC for ME3, if and when I get a proper ending DLC. And yes while overall (besides ending) I really enjoyed the game, there could be more and should have been more. I mean the N7 missions were nothing but multiplayer missions played in single player, annoying. As for the scanning and reapers showing up, I didn't mind it, except for the planets turning way to slow. I think it would not have been that bad, except I had just recently play ME2 and the scanning is so much quicker in that. One thing that disappointed me was the lounge on your ship. I mean it was great to go in there and see some of my crew talking a bit, but I should have been able to use it more. You know, grab a drink when Tali is in there, or really get into conversation with Javek and Garrus. Or the worst offender, the card table. I saw that and thought how cool would that be to be able to sit down with your main squad and play a game on your way to some big mission. Or hell they could have ended it like Star Trek: TNG with a poker game, that would have been a great end.
I have seen other calls for more LI DLC, and even that I agree with. I mean all in all Bioware/EA, have a gold mine here, all they have to do is fix the end and people will gladly pay more to add to the game. From more LI, to clearing out Omega, to what could be many more missions, there is just so much they could use. But only if they fix the end to what they told us it was going to be like in the first place.
Speaking of Forbes, here is another one from them:
Commander Shepard Actor Mark Meer Weighs In On Mass Effect 3 Ending And DLC - Forbes
And one more:
Mass Effect 3, Gears of War 3, and Why Reviewers Fail - Forbes